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Finding the Fourth Proportional to 20,123,316,091.80, 30,184,974,137.70 and 20,123,316,091.80

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Solution

The fourth proportional to 20,123,316,091.80, 30,184,974,137.70 and 20,123,316,091.80 is: 30,184,974,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123,316,091.80 : 30,184,974,137.70 = 20,123,316,091.80 : x
  2. Step 2: Convert to fraction form
    20,123,316,091.80/30,184,974,137.70 = 20,123,316,091.80/x
  3. Step 3: Cross multiply
    20,123,316,091.80x = 30,184,974,137.70 × 20,123,316,091.80
  4. Step 4: Simplify right side
    20,123,316,091.80x = 607,421,775,795,745,193,984
  5. Step 5: Solve for x
    x = 607,421,775,795,745,193,984/20,123,316,091.80
  6. Step 6: Final answer
    x = 30,184,974,137.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.